The application and introduction of laser cutting machine part.5

machine maintenance

Laser cutting machine price is not low, at least hundreds of thousands of more than a million.Therefore, prolonging the service life of laser cutting machine as far as possible can save the production cost and win more benefits.It can be seen that the daily maintenance and maintenance of laser cutting machine is very important.The following are mainly explained from six aspects:

1. Replacement of circulating water and water tank cleaning:

the laser tube must be filled with circulating water before the machine works. The quality and water temperature of the circulating water will directly affect the service life of the laser tube.So periodically replace the circulating water and clean the water tank.This is best done once a week.

2. Fan cleaning: 

the long-time use of the fan in the machine will cause the accumulation of a lot of solid dust inside the fan, making the fan produce great noise, which is not conducive to exhaust and odor removal.When the fan suction is not enough smoke, it is necessary to clean the fan.

3. Lens cleaning: 

there will be some mirrors and focusing mirrors on the machine.The laser is reflected through these lenses, focused and emitted from the laser head.Lens is easy to get dust or other pollutants, resulting in laser wear or lens damage.So clean your lenses every day.

While cleaning, pay attention to: 

1The lens should be gently wiped, do not damage the surface coating;

2. The wiping process should be handled gently to prevent falling;

3. When installing the focusing mirror, make sure to keep the concave downward.

4. Guide rail cleaning: 

guide rail, straight axis as one of the core parts of the equipment, its function is to guide and support.In order to ensure that the machine has higher machining accuracy, it is required that the guide rail and the straight line have higher guiding accuracy and good motion stability.In the operation process of the equipment, a large amount of corrosive dust and smoke will be produced in the processing of the processed workpiece. Based on these smoke and dust deposited on the surface of the guide rail and the straight spool for a long time, the machining accuracy of the equipment will be greatly affected, and corrosion spots will be formed on the surface of the guide rail and the straight spool to shorten the service life of the equipment.So every half a month to clean the machine guide rail.Turn off the machine before cleaning.

5. Fastening of screws and couplings: 

after the movement system works for a period of time, the screws and couplings at the movement joints will become loose, which will affect the smoothness of mechanical movement. Therefore, during the operation of the machine, it is necessary to observe whether there is abnormal sound or abnormal phenomenon in the transmission parts.At the same time the machine should be a period of time with the tool one by one solid screws.The first hardening should be about a month after the equipment is used.

6. Light path check: 

machine light path system is made up of mirror reflection, together with the focus lens focusing focus lens in the optical path was not found deviation problem, but the three mirrors is composed of mechanical part is fixed, the possibility of deviation is bigger, although usually does not happen, but suggest user before each work be sure to check the light path is normal.

The lubricating oil filling of X axis guide and lead screw, Y axis guide and lead screw, Z axis guide and lead screw must be checked every other week to maintain the lubrication of all moving parts and extend the service life of X axis, Y axis and Z axis guide and lead screw.B. inspect the surface pollution of the reflector and the focusing mirror irregularly (at least once a month) according to the workshop environment, and clean the optical lens in time to ensure its service life (see optical lens maintenance for details).

Clean up the sundries in the air outlet regularly to ensure the air outlet effect.

Check the filter in the air path regularly, and remove the water and impurities in the filter timely.

Regularly check whether the travel switch bracket and the bump bracket screw are loose.

Clean up the dust on the filter network of the ventilation fan of the electric control cabinet in time to ensure good ventilation so as to facilitate heat dissipation of the internal electrical components.

Clean the body in time for bed guide rail protection leather cavity debris, so as not to damage the guide rail, thereby extending the service life of the guide rail.

After the machine tool is installed and used for a period of time, the level of the machine tool should be adjusted again to ensure the cutting accuracy of the machine tool 

The lens cleaning

In the process of replacement, the placement, detection and installation of the optical lens should be careful to protect the lens from damage and pollution.After installing a new lens, clean it regularly.

When the laser cuts through the material, the working surface releases a lot of gas and splashes, which can harm the lens.When contaminants fall on the surface of the lens, they absorb energy from the laser beam, causing a thermal lensing effect.If the lens has not yet developed thermal stress, the operator can remove it and clean it.

In the process of lens installation and cleaning, any sticky matter, even nail oil drops, will increase the lens absorption rate and reduce the service life.Therefore, the following precautions must be taken:

1. Never install lenses with bare fingers.Finger gloves or rubber gloves should be worn.

2. Do not use sharp instruments to avoid scratches on the lens surface.

3. Do not touch the film layer when taking the lens, but hold the edge of the lens.

4, the lens should be placed in a dry, clean place to test and clean.A good table surface should have several layers of cleaning paper towels, and several pieces of cleaning lens cotton paper.

5. Users should avoid talking over the lens and keep food, drink and other potential contaminants away from the work environment.

Cleaning lenses should be done in a less risky manner.The following steps are set up for this purpose and should be followed by the user.The first step is to blow the float off the surface of the original by blowing a balloon, especially the lens with tiny particles and flocs on the surface. This step is necessary.But never use compressed air from the production line, as this can contain oil mist and water droplets, which can further contaminate the lenses.

In the second step, the lens was slightly cleaned with pure acetone.This level of acetone is almost waterless, reducing the likelihood of lens contamination.

The cotton ball dipped in acetone must be cleaned under light and moved in a ring.Once the cotton swab is dirty, it must be replaced.The cleaning should be done all at once to avoid the generation of wave tendons.If the lens has two coated surfaces, such as a lens, each surface needs to be cleaned in this way.The first side needs to be placed on a clean sheet of lens paper for protection.

If acetone does not remove all dirt, rinse with vinegar.Vinegar cleaning is used to remove dirt by dissolving it, but does not harm optical lenses.The vinegar can be experimental grade (diluted to 50% strength) or household white vinegar with 6% acetic acid.The cleaning procedure is the same as acetone cleaning. Acetone is then used to remove the vinegar and dry the lens. Cotton balls should be changed frequently to fully absorb the acid and hydrate.Until it's clean.

When contaminants and lens damage cannot be removed by cleaning, especially when the film is burned out due to metal splashes and dirt, the only way to restore good performance is to replace the lens.

END